Shade roller



J. LUTSCHAK SHAH ROLLER Filed Nov. 2, 1925 Nov. 22, 1927.

Fiji.

ENTOR i r% ATTORNEYS.

Patented Nov. 22, 1927.

aurso STA i .roi r n nu' rson'nx, or MILWAUKEE, w rsconsm.

. SHADE mum T A neationfniea november z, 19:25. Serial n 66,214f

This invention relates to ii'n rqvemencs in shade rollers. vention to provide a. novel and simplified construction whereby a shade roller canrbe conveniently and economically manufactured of tubular sheetmetal and-the actuating motor including both the spring and pawls, may be cheaply and simply manufactured and 'inay readily' be assembled fwithi n the motor and removably, fixed itherein, whereby to facilitate replacements The present invention is particularly c'oncerned with the motor which actuates the shade roller and it is important to an understanding of t-heinventio'n that attention be paid to the simple,'compact and unitary construction of the motor which is such that few parts are required, there is very little mechanism to get out of order, and in the event of spring breakage the entire motor may be unitarily removed and replaced with the utmost facility. I

In the, drawings: 7

Figure '1 is a detail view in fragmentary axial section through a shade roller embody,- ing this invention. 7

Figure 2 is a transversesection taken on theline indicated at 2-2 in Figure 1.

Figure 3 is a View similar to Fi'guie 1, showing a slightly modified form of motor.

Figure l is a section taken on line P 4 of Figure 3. j I

Figure 5 is a section taken on line 5+5 of Figure 3. V I

Figure 6 is a, detail view in perspective of the end of thespring motor shown in Figure 3.

Like parts are identifiedby the same ref-; throughout the several erence characters views. 7

The roller per se preferably comprises a tube 10 of sheet metal having caps 11 and 12 for its ends. 1 Cap 11 is provided centrally with a bearing trunnion 1?). Cap 12 has a bearing aperture 1% for the motor shaft 15 which has a reducedand squared extremity 16 engageable in a slotted bracket in the usual manner.

The simplicity of the construction, whereby the dogs and other operating parts of the motor are housed within tube 10, is one of the features of the present invention. In each of the devices herein disclosed the inner end of themotor shaft 15 is rotatably guided and positioned against axial thrust by means of an anchorage head designated in It is the object of the in- I gage notches 28. in; shaft 15. operate in the usual manner, centrifugally its entirety by are-range chara'et'i' 17p In the] device shown in Figures ,1, and 2, the

anchorage head comprises afdisk member '18 i with which are integm11y,, rermea a bearing; 1

base 19 and arms '20. Co-"operating wi t arms 20, is the, transversely elxte'ii'ding platev 7 i 1 which also has short arms 22. Arms 20 and 22 have aligned apertures through which extends a transverse pin 2'3. rinsin extends through the walls of tube IO-"wt are preferably formed a hilt whereby the ,is 'Sci1 i"d in place. It will be 1 noted that theshai't lfiis headed at 25 and thatfthe annular flange or head 25 is confined betwen' plflate 2 1 and- 2 i'ch wi $1613 re esses p Packets at 2 o receive theh'ead 5f, I

the cross .pin 23. Thus, theshaft is not only provided with bearings'at 1'9 andin pineal but. furthermore, due to the location of the annular flange -.or head 25, the entire shaft 15 is anchored against airi'al displacement.

Suitably mounted in the anchorage head 2 17 are a pair of dog's/26 and 27 whi'ch en- These dogs out of theirseets in notches 28 when the shade 10 is rapidly rotated, and being ad" ptedv to engage iii such fno'tches when the shade roller is practically at rest.

In the present device the Orpawls 26 I and 27 I are pivoted'on suitable short riveted to disk 18 as shown. Powervforthe rotation ofsth'e shade'roller in a direction to wind a shade thereon is furnished means of thespring 29which is wound about shaft 15and stud 19 between the anchorage head and cap 12. Thespringis hooked into disk 18at 29 ahd"is eirtended through the shaft15zit30/ i p The cap 12v '5 preferably held merely by being thrown I friction on the end oftube 1 0. It will be obvious thatwh n the nut 'i's removed from cross pin 23 to permit the withdrawal of the cross pin it becomes possible to pull shaft 15 and the anchorage head 17 unit-arily from the tube which comprises the roller proper. The facility with which the entire motor may be withdrawn and replaced makes it a simple matter to substitute a new motor for one in which the spring has become broken. Furthermore, when the motor is removed from the tube 10, it is very easy to supply a new sprmg.

In the construction shown in Figures 3 to 6, inclusive, the arrangement is very similar to that already described, with the exception that the anchorage head 37 in these views is somewhat different from that shown in Figures 1 and 2 at 17. Anchorage head37 comprises a cup-shaped memher having bayonet slots at 38 adapted to receive the anchorage studs 39 which project inwardly from the wall of tube 10. If desired, these studs 39 may be made integrally with the tube by cutting them from the wall thereof in the form. of inwardly extending tongues. The length of theam chorage studs is preferably such that they 'may engage cxteriorly on the head or flange 25 carried by shaft 15, thereby preventing axial movement of the shaft in one direction.

The dogs 26 and 27' are pivoted on suitable rivets fixed in the bottom of cup member '37. Preferably the depth of the cup is such that the head or annular flange 25 on shaf 15 will be confined between these dogs or the rivets which carry them on the studs 39 on the other.

The direction of torque of spring 29 when the motor is'wound'up is such as to tend to retain the anchorage studs 39 in the in- 'one hand and the tongues or anchorage 'nermost portions of thebayonet slots 38,

thereby the motor is rigidly anchored 'as long as the shade roller is in use, but when the torque on spring 29 is relieved the motor can instantly be withdrawn from the casing by rotating it counterclockwise as viewed in Figure 4 and then pulling it axially from thetube. i

In. both of the above described constructions'the entire motor is unitarily removable and is compactly assembled from few parts in such manner that the awls well as the spring are housed within the roller tube. It is obvious, thereforathat the invention as disclosed responds fully to the objects of the invention as hereinbefore' specified.

I claim:

1. Thecombination with a hollow shade roller. of an anchoringstud extending radially of said roller and [disposed within said hollow, a motor housed within said roller and comprising a cup-shaped anchorage head engaged with said stud, a shaft rotatably journalled in and extending from said head, a thrust bearing member secured to said shaft and confined between said stud and head, pawls carried by and confined within said head, said pawlsbeing engage able with said shaft, and a spring engaging said head and shaft.

2. The combination with a hollow'shade roller, of an anchoring stud extending radially of said roller and'disposed within said hollow, a motor housed within said, roller and 7 comprising a. cup-shaped anchorage head provlded with a bayonet slot engaging said stud, a shaftrot-atably'jo'urnalled in and extending from said'head, a thrust bearing member secured'to said shaft Yandconfined between sald stud and head, pawlscarried by and confined within said head, said roller, of an anchoring stud extending radi-' ally of said roller and disposed within said hollow, a motor housed within said roller and including an anchorage head provided] with a portion extending axially of. said roller and engaged with said stud, a shaft rotatably journalled in and extending from said head, and a thrust bearing member secured to said shaft and confined between said stud and head. e 5. The combination with a hollow shade roller, of ananchoring stud extending radially of said roller and disposed withinsaid hollow, a motor housed within said roller and including an anchorage head provided with a'portion extending axially of said roller and having a bayonet slot engaging said stud, a shaft rotatably journalled in and extending from said head, and a thrust bearing member secured to said shaft and confined between said stud and head.

JOHN LUTSCHAK.

stud and r I 

